AZ91镁合金在单相和两相电解液中微弧氧化后的高温磨损行为

IF 2.2 3区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Tribology-transactions of The Asme Pub Date : 2023-03-08 DOI:10.1115/1.4062100

E. Selvi, M. Kaba, F. Muhaffel, A. S. Vanlı, M. Baydoğan

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引用次数: 4

摘要

AZ91合金的低耐磨性是限制其在工业上广泛应用的主要因素。结果表明，在室温和200℃下，合金的耐磨性均有显著提高，且硅酸盐基电解质在两种温度下均具有较好的耐磨性。结果还表明，裸露合金的主要磨损机制是氧化，而mao处理合金的主要磨损机制是脆性断裂。

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Elevated Temperature Wear Behaviour of AZ91 Magnesium Alloy after Micro-Arc Oxidation in Single and Dual Phase Electrolytes

Low wear resistance of AZ91 alloy is the main factor limiting its more common use in industrial applications. It is therefore the micro-arc oxidation (MAO) process is mostly applied to the alloy to improve its wear resistance at room temperature (RT). However, the effect of the MAO coating on the wear behaviour at elevated temperatures was investigated in limited works. In this study, the MAO process was performed on an AZ91 alloy in single-phase (silicate-containing) and dual-phase (aluminate+phosphate containing) electrolytes, and its wear behaviour was investigated at both RT and 200 °C compared to the bare alloy. The results showed that the wear resistance of the alloy could be significantly improved both at RT and 200 °C, and the silicate-based electrolyte provided a better wear resistance at both temperatures. The results also showed that the dominant wear mechanism was oxidation for the bare alloy, and brittle fracture for the MAO-treated alloys.

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来源期刊

Journal of Tribology-transactions of The Asme 工程技术-工程：机械

CiteScore

4.20

自引率

12.00%

发文量

117

审稿时长

4.1 months

期刊介绍： The Journal of Tribology publishes over 100 outstanding technical articles of permanent interest to the tribology community annually and attracts articles by tribologists from around the world. The journal features a mix of experimental, numerical, and theoretical articles dealing with all aspects of the field. In addition to being of interest to engineers and other scientists doing research in the field, the Journal is also of great importance to engineers who design or use mechanical components such as bearings, gears, seals, magnetic recording heads and disks, or prosthetic joints, or who are involved with manufacturing processes. Scope: Friction and wear; Fluid film lubrication; Elastohydrodynamic lubrication; Surface properties and characterization; Contact mechanics; Magnetic recordings; Tribological systems; Seals; Bearing design and technology; Gears; Metalworking; Lubricants; Artificial joints